Resource Manager: How to assign approver using API

Hello!

I've been reviewing the API documentation for Resource Management (https://10kft.github.io/10kft-api/). I was able to add a new user using the API. However, now I also need to assign an approver for the user profile.

I found I can send a GET request to the https://api.rm.test.smartsheet.com/api/v1/users/723472/approvers endpoint and get the list of approvers for a given User ID. How do I add to that list of approvers using the API?

Thank you so much for your help!

Best,

Dariel Dato-on